Neurogenic syncope, also known clinically as vasovagal syncope, usually occurs after a person has been exposed to various stimuli. It is mainly caused by a decrease in blood supply to the heart through vagal reflexes, resulting in reduced or interrupted blood supply to the brain and a transient loss of consciousness. It is generally believed that syncope is similar to epileptic seizures, but epilepsy can be excluded by EEG. Vasovagal syncope is very common clinically, mainly due to emotional stress or extreme fatigue or fear, resulting in vasovagal syncope in patients whose blood vessels are not innervated by the vagus nerve. The causes and mechanisms of syncope are not yet fully understood clinically and are mainly theoretical. Patients with similar symptoms are advised to avoid emotional anxiety as well as emotional stress and fear to avoid triggering syncope.